Lua APA (7ú heag.)
Smail, D. (2015). The origins of unhappiness: A new understanding of personal distress. Karnac.
Lua i Stíl Chicago (17ú heag.)
Smail, David. The Origins of Unhappiness: A New Understanding of Personal Distress. London: Karnac, 2015.
Lua MLA (9ú heag.)
Smail, David. The Origins of Unhappiness: A New Understanding of Personal Distress. Karnac, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.